Improve loggging to debug invalid acks. No functional change.

net/quic/quic_connection.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/quic/quic_connection.h"
 
 #include <string.h>
 #include <sys/types.h>
 
 #include <algorithm>
@@ skipping 810 matching lines @@
     LOG(WARNING) << ENDPOINT << "Peer sent missing packet: "
                  << incoming_ack.missing_packets.Min()
                  << " which is smaller than least_packet_awaited_by_peer_: "
                  << sent_packet_manager_.least_packet_awaited_by_peer();
     return "Missing packet smaller than least awaited";
   }
 
   if (!sent_entropy_manager_.IsValidEntropy(incoming_ack.largest_observed,
                                             incoming_ack.missing_packets,
                                             incoming_ack.entropy_hash)) {
-    LOG(WARNING) << ENDPOINT << "Peer sent invalid entropy.";
+    LOG(WARNING) << ENDPOINT << "Peer sent invalid entropy."
+                 << " largest_observed:" << incoming_ack.largest_observed
+                 << " last_received:" << last_header_.packet_number;
     return "Invalid entropy";
   }
 
   if (incoming_ack.latest_revived_packet != 0 &&
       !incoming_ack.missing_packets.Contains(
           incoming_ack.latest_revived_packet)) {
     LOG(WARNING) << ENDPOINT
-                 << "Peer specified revived packet which was not missing.";
+                 << "Peer specified revived packet which was not missing."
+                 << " revived_packet:" << incoming_ack.latest_revived_packet;
     return "Invalid revived packet";
   }
   return nullptr;
 }
 
 const char* QuicConnection::ValidateStopWaitingFrame(
     const QuicStopWaitingFrame& stop_waiting) {
   if (stop_waiting.least_unacked <
       received_packet_manager_.peer_least_packet_awaiting_ack()) {
     DLOG(ERROR) << ENDPOINT << "Peer's sent low least_unacked: "
@@ skipping 1594 matching lines @@
 void QuicConnection::OnPathClosed(QuicPathId path_id) {
   // Stop receiving packets on this path.
   framer_.OnPathClosed(path_id);
 }
 
 bool QuicConnection::ack_frame_updated() const {
   return received_packet_manager_.ack_frame_updated();
 }
 
 }  // namespace net